How to Replace Dell Latitude 3480 laptop Internal Battery

Dell Inspiron 5477 AIO Upgrade From SATA to Crucial P1 M2 NVME dell latitude 3480 m 2 slot Precision 3520: Internal dives supported: 2 Drive configurations supported: (1x cache drive and 1x inch dell latitude 3480 m2 slot , 12 threads ✔️16GB DDR4-3200MHz RAM ✔️512GB PCIe Gen NVMe SSD ✔️14 Inch

dell sc slot I'm replacing the current 120GB drive